Предмет: Математика, автор: miracle0899

Помогите, кто сможет пожалуйста!!! В каких точках касательная и линии 4х^2+9у^2-72=0 горизонтальны?

Ответы

Автор ответа: krolikzajcev

2

Перепишем уравнение в виде

$\frac{x^2}{18} +\frac{y^2}{8} =1\\$

Это - эллипс.

Касательные горизонтальны в точках А и В.

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